We use these at our wine bar. They are essentially identical in size to the Riedel Vinum ones except they have titanium in them vs crystal.
The upside is they are much, much more durable thaan the Vinum ones. The downside is they don't "clink" like the Vinum ones do when touched together (minor) and the rim is slightly thicker (less minor). The weight difference is negigible.
At $10/each for the Forte vs $20/each for the Vinum, the Schott Zweisel ones are a no brainer, IMHO (that's why I bought 1,000 of the Schott Zweisel ones for my wine bar)